Improvement in gr



UNITED STATES PATENT OEEIcE.

ELIAS ZIEGLER AND CHARLES CABLE, OF HARMONY, PENNSYLVANIA.

IMPROVEMENT IN GRAPPLlNG-HOOKS.

Specification forming part of Letters Patent No. 113,126, dated March28, 1871.

To all 'whom it may concern:

Be it known that we, ELIAS ZIEGLER and CHARLES CABLE, of Harmony, in thecounty of Butler and State of Pennsylvania, have invented a new andImproved Hoisting Apparatus; and we do hereby declare that the followingis a full, clear, and exact description thereof, which will enableothers skilled in the art to make and use the same, reference being hadto the accompanying drawing, forming part of this specification.

This invention relates to improvements in hoisting apparatus for liftingheavy stones and other heavy weights; and it consists in an improvedgrapplin g-ton gs, constructed and arranged as hereinafter described.

The drawing represents my improved tongs in side elevation.

The arms A and jaws A of the tongs are each made of a flat bar of metal,bent double and riveted together, except at the upper en d and at theparts where they are pivoted, being arranged at a sufficient distanceapart at the upper end to receive the grooved rollers B, over which theehainC works, said rollers being mounted on pivots D, passing throughthe two parts of the said arms and below the rollers. They also receivethe iiat chain-hooks E between them, said hooks being secured by onebolt, F, passing through them, and another, G, engaging a notch in theend. At the pivot H the parts of the said arms are separated, so thatone part of each passes between the two parts of the other. These armsand jaws are pivoted together, so as to receive the clamping-strainedgewise. The jaws have oval-faoedblocks I linked to them above theends, which have hooks L, to support the blocks when clamped vagainstthe weight to hold it for raising, and take the strain oi' the links M,which are intended mainly for attaching the blocks lto the jaws. Saidblocks are used to prevent the jaws from injuring the sides of dressedstones or other articles subject to such injury while being clamped toberaised. They are made to oscillate on the jaws for adjusting theirsurfaces fairly to the side of the block to be raised.

The chain is connected at each end to one of the arms by the hookthereon, and passed over the roller of the opposite arm, so tha-t thelifting force is applied in a manner calculated to cause the jaws toclamp the stone with the greatest force due to the weight of the load.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- As an improvement in mechanism for operatingthe grappling-hooks of hoisting apparatus, the pivoted rolls B and hooksE, located between bars A A', combined, as described, with chains C,arranged as and for the purpose specified.

ELIAS ZIEGLER.

CHARLES CABLE. Witnesses:

J os. S. LUsK,

J. W. BOWMAN, T. L. DARRAGH, 0. R. COE.

